插头残余电压测试装置-插头放电测试仪-剩余电压测试治具

插头残余电压测试仪|插头放电测试仪|插头剩余电压测试仪

满足IEC60065/GB8898第9.1.6节，IEC60950/GB4943第2.1.1.7节, IEC60335-1|GB4706.1第22.5节，IEC61010/GB4793.1第6.1.2, 6.10.3节等标准要求，对预定要用电源插头与电网电源连接的设备，其设计应当确保在插头从电源插座拔出后，当接触插头的插脚或插销时，不得因电容器贮存的电荷而产生触电危险（残余电压或剩余电压）。

仪器配置：示波器/示波器探头及配合残余电压测试开关

针对插头放电测试，在测试中对探头的输入阻抗和输入电容有了明确的要求。输入阻抗要大于100 MΩ，输入电容小于25pF或更小。

测试方法

在插头放电测试时，需要对示波器探头进行校准。测试时，把电源从输入端输入，测试样品插到输出插座上，然后把示波器探头连接到L和N之间。打开电源让样品工作，然后关闭开关，这时示波器会把插头两端的放电波形测试出来，通过示波器读出放电的时间。

CTL DECISION SHEET（CTL DSH-0716决议）要求

Question:

When the plug discharge test is performed using a voltage probe and oscilloscope for direct measurement of the voltage decay, what probe impedance shall be used to ensure uniform and comparable results?

Note: IEC 60950-1/2005 specifies 100 M? ± 5 M ? in parallel with an input capacitance of 20 pF ± 5 pF.

Decision:

If the relevant standard does not contain contradictory requirements, a voltage probe having an input impedance of 100 M? or greater in parallel with an input capacitance of 25 pF or less, shall be used for this test.

For other (automatic) equipment with special measurement techniques equivalent measures shall be taken to ensure comparable results.

Explanatory Notes:

This issue was raised at the 2008 CTL meeting after discussing the proficiency testing program on plug discharge 2007/2008. Participants used several different probe impedances, which caused inconsistent results.